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Income Taxes - Income Tax Provision/(Benefit) and Deferred Income Taxes (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Income Taxes [Line Items] |  |
Undistributed Earnings of Foreign Subsidiaries | $ 52,000,000 |
Deferred income tax assets benefits percentage | 100.00% |
Valuation allowance | $ 21,700,000 | $ 19,916,000
Domestic Country |  |
Income Taxes [Line Items] |  |
Valuation allowance | 0 |
Operating loss carryforward | $ 24,000,000 | 29,000,000
Operating Loss Carryforwards, Expiration Dates | begin to expire in 2024 and can be utilized through 2030 |
State And Local Jurisdiction |  |
Income Taxes [Line Items] |  |
Valuation allowance | $ 2,100,000 |
Deferred income tax assets net of federal benefit | 4,000,000.0 |
Operating loss carryforward | $ 49,000,000 | 51,000,000
Operating Loss Carryforwards, Expiration Dates | will expire beginning in 2021 and end in 2045 |
Foreign Country |  |
Income Taxes [Line Items] |  |
Valuation allowance | $ 19,600,000 |
Deferred income tax assets net of federal benefit | 29,700,000 |
Operating loss carryforward | $ 107,000,000 | $ 96,000,000
Operating Loss Carryforwards, Expiration Dates | 2034 |

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